• 한국농림기상학회지
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• 제21권4호
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• pp.373-379
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• 2019

스마트팜은 원예작물의 생산성과 품질을 제고하기 위한 생력화 방법으로 최근 많은 주목을 받고 있다. 하지만 국내의 스마트팜은 단순한 환경 모니터링과 환경제어만 가능한 초기단계에 머물고 있으며, 작물 생육에 최적화된 환경을 모의하는 의사결정도구의 개발은 미흡한 상태이다. 본 연구에서는 의사결정도구로써의 작물생육모형의 활용가능성을 확인하기 위해 국내에서 개발된 GreenTom모형의 품종모수를 추정하고 모형의 모의 성능을 검증하였다. 적엽은 시설토마토 재배에서 흔히 행해지는 농작업이지만 기존 모형은 이를 모의하지 않아 지상부 생육 모의에 문제를 나타냈다. 이를 해결하기 위해 적엽 알고리즘을 개발하여 기존 모형에 추가하고 모의 성능을 검증한 결과, 개선된 모형은 시설재배 토마토의 발달과 생육을 비교적 잘 모의하여 본 모형이 의사결정도구로 활용될 수 있음을 확인하였다.

• 한국환경과학회지
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• 제28권11호
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• pp.1019-1025
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• 2019

The aim of this study was to analyze the light traits in a solar light-collector device and its effects on lettuce growth at an early growth stage. The three hyper parameters used were the reflector diameter (2 cm and 4 cm), coating inside the reflector (chrome-coated, non-coated) and distance from the light fiber (15 cm and 20 cm). The results showed that light efficiency, which is the ratio of light intensity inside the fiber to the solar intensity, improved by 41.1 % when using a 2 cm diameter chrome-coated reflector at a distance of 15 cm from the light fiber; whereas it only improved by 20.6% when a non-coated reflector was used. As the reflector size was increased to 4 cm, the light efficiency for the coated and non-coated reflectors increased by 28.5 % and 26.4 %, respectively, hence, no significant difference was observed. When the light fiber was placed at a distance of 20 cm, the increase in light efficiency with coating treatment was 8 % higher than without coating treatment. We also compared the efficiency of light-fiber treatment with that of LED treatment in our lettuce nursery, and observed that the plants exhibited better growth with light-fiber treatment. We observed an average increase of 1.7 cm in leaf height, $7cm^2/plant$ increase in leaf area, and 32 mm increase in root length upon light-fiber treatment as opposed to those observed with LED treatment. These findings indicate that the collector light-fiber is economically feasible and it improves lettuce growth compared with the LED treatment.

• 대한원격탐사학회지
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• 제40권1호
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• pp.45-56
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• 2024

Faced with aging populations, declining resources, and limited agricultural productivity, rural areas in South Korea require innovative solutions. This study investigated the potential of drone-based vegetation indices (VIs) to analyze soybean growth patterns in open-field smart agriculture in Goesan-gun, Chungbuk Province, South Korea. We monitored multi-seasonal normalized difference vegetation index (NDVI) and the normalized difference red edge (NDRE) data for three soybean lots with different irrigation methods (subsurface drainage, conventional, subsurface drip irrigation) using drone remote sensing. Combining NDVI (photosynthetically active biomass, PAB) and NDRE (chlorophyll) offered a comprehensive analysis of soybean growth, capturing both overall health and stress responses. Our analysis revealed distinct growth patterns for each lot. LotA(subsurface drainage) displayed early vigor and efficient resource utilization (peaking at NDVI 0.971 and NDRE 0.686), likely due to the drainage system. Lot B (conventional cultivation) showed slower growth and potential limitations (peaking at NDVI 0.963 and NDRE 0.681), suggesting resource constraints or stress. Lot C (subsurface drip irrigation) exhibited rapid initial growth but faced later resource limitations(peaking at NDVI 0.970 and NDRE 0.695). By monitoring NDVI and NDRE variations, farmers can gain valuable insights to optimize resource allocation (reducing costs and environmental impact), improve crop yield and quality (maximizing yield potential), and address rural challenges in South Korea. This study demonstrates the promise of drone-based VIs for revitalizing open-field agriculture, boosting farm income, and attracting young talent, ultimately contributing to a more sustainable and prosperous future for rural communities. Further research integrating additional data and investigating physiological mechanisms can lead to even more effective management strategies and a deeper understanding of VI variations for optimized crop performance.

• Journal of the Korean Data and Information Science Society
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• 제28권6호
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• pp.1427-1435
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• 2017

최근 농업 분야에서는 빅데이터와 사물인터넷을 이용한 스마트팜의 확산이 이루어지고 있다. 스마트팜은 첨단 정보통신기술을 농업에 활용하여 농작물의 높은 생산성과 우수한 품질을 가져다줄 것으로 주목받고 있다. 스마트팜은 복합 환경제어시스템으로 온실 안에서 자라고 있는 농작물의 생육환경을 자동적으로 측정하여 실시간으로 환경 정보가 방대한 양의 데이터로 쌓이고 있다. 따라서 측정된 빅데이터를 활용한 농작물의 통계적 최적 생육환경설정 모형은 스마트팜에서 의사결정을 하는데 도움이 될 것으로 사료된다. 본 연구에서는 스마트팜 토마토 농가에서 실제로 수집된 자료를 이용하여 수확량과 환경변수의 연관성을 알아보고 이것을 토대로 수확량을 예측하기 위해 다중회귀분석을 실시하였다. 먼저 토마토 생육과정을 고려하여 환경인자에 대해서 적절한 변수 변환을 한 후 새롭게 생성된 변수들을 이용하여 모형을 적합시켰다. 그리고 적합된 통계적 모형을 이용하여 토마토의 수확량에 영향을 미치는 최적환경인자를 도출하였고, 이를 바탕으로 토마토 농가의 수확량을 예측할 수 있었다. 결론적으로 본 연구결과는 통계적 모형을 활용하여 토마토 생산성을 향상시킬 수 있는 최적의 생육환경을 조절할 수 있는 재배전략을 제시하는데 의미가 있을 것으로 기대된다.

• 한국의류산업학회지
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• 제8권4호
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• pp.420-426
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• 2006

Korean prior studies on smart clothing seeking complete mixture of clothing and computer with diverse functions in the ubiquitous environment were so mere, while there have been aggressive activities to develop diverse smart clothing products led by the relevant industries and universities in foreign countries. Given prospective growth of the smart clothing market, there should be customers' evaluation of functions and utility of and sensitivity to smart clothing as well. This study conducted a questionnaire to Korean customers in their twenties regarding their perception and liking of and willingness to use smart clothing, and examined the needs of new functions of smart clothing. As a result, the customers in their twenties turned out to like well-designed and comfortable clothing, and be exposed to diverse and continuous computing environment. Also, they have relatively low perception but considerably high liking of smart clothing, indicating their high willingness to use smart clothing products. They cited 'selectable functions' and 'mobile and convenient ' as merits, and 'too expensive' and 'easy to wash' as demerits of smart clothing. In the respect, they proposed many interesting smart clothing ideas, such as 'clothing with automatic temperature-sensing function, which gets higher heat- insulating function by tightening the textile structure in winter and higher ventilating function by loosening the textile structure in summer.' We hope the results of this study will serve basic data for development of more efficient smart clothing in the future.

• 디지털산업정보학회논문지
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• 제12권4호
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• pp.41-49
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• 2016

Smart Grid is a next generation of new power growth electrical grid which provide high quality of electrical service by using Information Technologies to increase intelligence and performance. By using Smart Grid system, it can support energy management such as increase quality of electrical power, decrease energy and decrease emissions. However, Smart Grid uses information of energy consumption and when Smart Grid collects information, it will create private information. In this thesis, it will address issues of security private information which caused by Smart Grid for administrative measure and efficiency of Smart Grid in domestic. Also, cryptographic module algorithm, latest security solutions and strong wireless security policy for network environment such as wireless communication Iinternet are require for Smart Grid perform successfully and protect national power network equipment from cyber-attack and can stop leakage of user's personal information. Finally, it is urgent to prepare protection measures of National industrial facilities and power grid which can prepare for a cyber terrorism and penetration attacks and build emergency countermeasure management team for Smart Grid are require for safe Smart Grid environment.

• International Journal of Internet, Broadcasting and Communication
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• 제13권1호
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• pp.20-25
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• 2021

In the background of the rapid development of the IoT, smart home work is becoming more and more important to each science and technology company. Smart home provides a safe, comfortable, high-quality, high-performance smart home living space compared to general homes, and at the same time It is responding to the low-carbon, eco-friendly global trend. Growth drivers driving the smart home market are increasing the number of Internet users, increasing disposable income in developing countries, increasing the importance of remote home monitoring, and increasing the need for energy saving and low carbon. In 2013-2014, Xiaomi launched a series of smart routers and smart home hardware devices. In 2015, it announced the latest product of the Xiaomi Ecological Chain, the "Smart Home Package," and in 2016 launched the MIJIA brand to invest in various smart product companies. In 2017, Xiaomi announced a plan to build an open smart hardware MIOT platform. We investigated the management strategy of Xiaomi home smart service based on IOT. The management strategy was divided into cost lead strategy, differentiation strategy of Xiaomi home service, and AIOT strategy of Xiaomi smart home.

• 디지털융복합연구
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• 제17권1호
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• pp.169-177
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• 2019

현재의 도시는 교통혼잡, 환경오염, 도시범죄와 같은 다양한 문제를 겪고 있으며 성장 한계에 직면 해 있다. 도시의 지속가능한 성장은 경제, 사회 및 환경과 밀접한 관련이 있으며 인구통계학적 추세에 대한 이해를 바탕으로 잘 관리 된 도시는 부정적인 요인을 최소화하고 이익을 극대화 할 수 있다. 최근에는 이러한 도시 문제를 해결하기 위해 스마트 시티를 구축하려는 다양한 시도가 확산되고 있다. 그러나 스마트 시티에 대한 다양한 정의가 혼재되어 있고, 스마트 시티 구현 방법과 전략은 기술의 발전과 축전된 경험으로 인해 진화하고 있다. 본 연구에서는 문헌연구를 통해 그동안 제시된 스마트 시티의 정의들을 정리하여 통합적인 정의를 제시하였다. 스마트 시티는 제4차 산업혁명과 함께 미래 사회의 핵심 플랫폼으로 주목받고 있다. 그동안의 스마트 시티가 기존의 도시 문제해결에 치중하였다면 제4차 산업혁명시대에서의 스마트 시티는 혁신을 통한 지속가능한 성장을 할 수 있어야 함을 더욱 강조하고 있다. 본 연구에서는 제4차 산업혁명의 플랫폼으로서 스마트 시티를 구축할 때 추진되어야 할 전략들을 제시하였다.

• 디지털융복합연구
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• 제9권2호
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• pp.79-88
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• 2011

본 연구는 이러닝의 질적 저하와 산업의 수익성 악화라는 문제 인식과 함께 이러닝의 지속 성장을 위한 대안으로 스마트한 이러닝, 즉 스마트러닝에 관한 체계적인 연구를 탐색해보고자 한다. 따라서 본 연구는 스마트러닝의 개념 정의 및 효과적인 구현 조건을 제시함으로써 스마트러닝이 체계적으로 정립 및 구현되도록 하는 데에 기여함으로 목적으로 하고 있다.

• International Journal of Internet, Broadcasting and Communication
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• 제10권3호
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• pp.35-41
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• 2018

Smart device has become an affordable main computing resource for robotic ap-plications in accordance with a fast growth of mobile internet environment. Since the computing power of smart device has been increased, smart device based ro-bot system attempts to replace traditional robot applications with laptop-based system. Methodologies for acquisition of remote sensory information and control of various types of robots using smart device have been proposed recently. In this paper, we propose a robot control system using a monitoring program and a communication protocol. The proposed system is a combination of an educa-tional programming oriented robot named EPOR-S. as small service robot plat-form and a smart device. Through a simulation study using image processing, the feasibility of combination of the proposed robot monitoring program and control system was verified.